What’s Vulnerable › Vulnerabilities

CVE-2026-73531: django-helpdesk < 2.3.3 Stored XSS via HTML Attachments

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-09-09
• Weakness: CWE-79

Description

django-helpdesk before 2.3.3 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to inject arbitrary JavaScript by submitting HTML-formatted email messages or uploading .html/.htm file attachments through public ticket submission channels. Attackers can exploit the lack of sanitization and Content-Disposition headers at the attachment-serving layer to execute malicious scripts in the browser session of authenticated staff members who open the attachment while triaging tickets.

Affected products

• django-helpdesk/django-helpdesk: before 2.3.3 — fixed in 2.3.3

How to fix

Upgrade to a fixed version: django-helpdesk/django-helpdesk 2.3.3. Check the vendor advisory for mitigations.

References

• https://github.com/django-helpdesk/django-helpdesk/security/advisories/GHSA-q46c-8w98-fq2g
• https://www.vulncheck.com/advisories/django-helpdesk-stored-xss-via-html-attachments

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